<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>堆快照监控内存</title>
</head>
<body>
  <button id="btn">Add</button>

  <script>
    let tempEle = []
    function test () {
      console.log('click')
      let ul = document.createElement('ul')
      for (let i = 0; i < 10; i++ ) {
        let li = document.createElement('li')
        ul.appendChild(li)
      }
      tempEle = ul
    }

    btn.addEventListener('click', test)
  </script>
</body>
</html>
